...If you install this component outside of a Symfony application, you must require the vendor/autoload.php file in your code to enable the class autoloading mechanism provided by Composer. The $file variable is an instance of Symfony\Component\Finder\SplFileInfo which extends PHP’s own SplFileInfo to provide methods to work with relative paths. The Finder object doesn’t reset its internal state automatically. This means that you need to create a new instance if you do not want to get mixed results. The component provides lots of methods to define the search criteria. ...